(seulement en anglais et en italien)
Seismically induced foundation failures can be triggered due to the increase of load beyond capacity or strength loss of the bearing soils. A major category of remedial measures against such mode of damage is the improvement of foundation soils.
Considering the case of existing structures in the urban environment, however, applicability of a great majority of the methods included in this category are either not possible or seriously limited due to the excessive noise or vibration generated during construction. On the other hand, solidification of foundation soils through method of injection bears exceptional advantages regarding such concerns, and provides a relatively high level of effectiveness compared to the possible alternatives. Two applied cases of foundation bearing capacity improvement through utilization of commercial polymer injection are presented for existing structures in Turkey. Penetration testing was utilized before and after execution for the assessment of treatment effectiveness of the foundation soils which were liquefaction susceptible in one case and nonliquefiable rather weak fine soils in the other. On the basis of the results, the effectiveness of the method is evaluated and relevant practical aspects of implementation involved in applications in the urban environment are discussed …
